Taibai (SP3): The Inner-Foot Point for an Aching Big Toe Joint and a Bloated Belly

Where Taibai Sits

This point sits on the inner edge of the foot, in the dip right behind the big toe joint, on the line where the paler skin of the sole meets the skin of the top of the foot.

The line this point belongs to starts at the inner corner of the big toenail. It runs along the inner edge of the foot, passes in front of the inner ankle bone, and climbs the inner side of the leg along the back edge of the shin bone. It crosses the inner knee, runs up the inner thigh, enters the belly and rises to the side of the chest. Vietnamese and Chinese texts call it the Spleen channel. This is its third stop, the first one behind the big toe joint.

The World Health Organization standard places it on the inner side of the foot, in the dip behind the big toe joint, at the border between the red and white flesh. That old phrase describes the skin line along the edge of the foot, where the darker, thinner skin of the top meets the paler, thicker skin of the sole. The Vietnamese handbook gives the same place in its own words: on that skin line along the inner edge of the foot, level with the place where the head of the first long foot bone joins its shaft. No measuring is needed. The joint and the skin line are the landmarks.

Underneath lies the muscle that pulls the big toe away from the others and supports the inner arch (the abductor hallucis). It runs along the whole inner edge of the foot and is often tight in people with tired arches or bunions. The round head of the first long foot bone sits right in front of the point, forming the bump of the big toe joint. The skin here is served by a branch of the long nerve that runs down the inner leg, fed from the fourth lumbar root, and by a branch from the sole.

Why This Spot

On the anatomical side, the big toe joint takes more load than any other joint in the foot. It bends with every step as you push off, and with age it often stiffens, wears or grows a bunion. The muscle along the inner edge of the foot works hard to steady that toe and hold up the arch. When the joint aches or the arch tires, the dip behind the joint is often tender, and it can be worked without pressing on the sore joint itself.

In this tradition the point has two roles. It is the stream point of its channel, one of the five transport points between the toes and the knee, where the flow is described as gathering speed. It is also the source point, the place where the deeper strength of the organ it belongs to is said to surface and can be reached most directly. The Spleen in this tradition is not the organ of Western anatomy. It stands for digestion, for turning food into strength, and for moving fluids. When that function is weak, the old books describe a heavy body, a bloated belly, loose bowels and tired limbs. This point is a first choice for all of them.

The name, Supreme White, is often read as the pale skin of the sole that the point sits on. Its Vietnamese name, Thái Bạch, means the same.

What the Old Texts Say About Taibai

The Lingshu, the Spiritual Pivot, a Han-dynasty text, names this point twice. In its first chapter it is listed as the source point of the Spleen, one of the twelve places through which the five organs are said to be reached. In its second chapter it appears as the stream point of the channel, in the hollow behind the big toe joint. Both roles have stayed with it ever since.

The Vietnamese handbook of points and channels by Ngo Trung Trieu, published by Hong Duc, lists it first for a swollen, painful big toe joint, then for stomach pain, a swollen, bloated belly, constipation, vomiting, loose stools and swelling from fluid. Its location in that book is short: in the hollow below the bone on the inner edge of the foot. The quick method is to follow the skin line along the inner edge of the foot to the level where the head of the first long foot bone meets its shaft.

Notice that the book puts the big toe joint before the stomach. For the tradition, this is first of all a local point for the foot, and second a point for digestion. That reputation comes from long use rather than proof. It tells you that many hands, over many generations, kept coming back to this hollow on the inner foot.

Points That Work With Taibai

The first partner is close by on the same line. From this point, slide your fingertip back along the inner edge of the foot, toward the heel, about a thumb's length. Where the long foot bone widens at its back end, there is a second dip. In this tradition the two are a classic pair, used together for an aching inner foot and arch, and for a bloated belly.

The second is on the front of the shin. From the dip at the outer lower edge of the kneecap, measure four fingers down and move one finger out from the shin's sharp edge. It is used with this one for a weak stomach and tired legs, the two said to support each other.

The third sits on the inner leg, four fingers above the inner ankle bone, right behind the edge of the shin bone. It is used with this one for heaviness, bloating and swollen ankles. That point is traditionally avoided in pregnancy, so if you are pregnant, leave that partner out.

How to Find and Press Taibai

Getting Into Position

Sit on a firm chair and cross the ankle over the other knee, so the inner edge of the foot faces up toward you. If that is a strain, rest the foot on a second chair and turn the knee outward. If bending is still hard, use a rounded-tip tool with a long handle, or a smooth stick. The foot and toes should be relaxed.

How to Find It

Run your fingertip along the inner edge of the foot toward the big toe. Close to the toe you will meet a firm, rounded bump: the big toe joint. Slide your fingertip back off that bump, toward the heel, and it drops into a small dip right behind it. Stay on the line where the paler skin of the sole meets the skin of the top of the foot.

Probe that dip with a rounded-tip pressing tool, or the tip of your thumb with the nail cut short. Move in small steps, a little up and down across the skin line. Most of it will feel like firm muscle against bone. One spot will sting: a small, sharp, pinpoint tenderness. That spot is the point. If you have a bunion, the dip may sit further back than you expect. Follow the bump to its back edge and search there.

How to Press It

Keep the tip of the tool or thumb on the stinging spot and rub in small circles, about the size of a fingernail, roughly one each second. Aim the pressure in toward the centre of the foot, against the underside of the bone, not forward onto the joint. Hold the top of the foot with your other hand so it stays still. Keep the tip on the same spot; do not let it slide onto the joint.

How Much Pressure

Sharp under the tool is right. That small sting tells you that you are on the point. The test is what happens when you lift off: the sting should fade within moments. If the pain stays after you lift the tool, if it spreads, or if the joint turns swollen, hot or red, stop and leave it for several days. If you are holding your breath, or you are curling your toes against the pressure, you are pressing too hard. Ease off until you can breathe slowly through the sting.

How Long

Work each foot for one to three minutes. In the first sessions keep to about one minute. As the days go on, add a little time, up to three minutes. Do both feet, even when only one big toe aches. Once or twice a day is plenty. Pressing longer does not add benefit; it mostly adds soreness.

When to Do It

Morning suits a big toe joint that is stiff on the first steps out of bed. Late afternoon suits a foot that aches after a day of walking or standing. For a heavy, bloated belly, an hour or so after a meal is a common time, never on a very full stomach. Before bed is a good time too, as part of winding down. Do not press in the middle of the night. If an aching foot wakes you, pressing then tends to wake you further. Keep the pressing for the day and the evening.

What This Won't Do

It will not remove the reason your big toe joint aches. In people past fifty, that joint usually hurts because of wear in the cartilage, a bunion that has pushed the toe out of line, gout, or shoes that squeeze the front of the foot. A bloated belly can come from food intolerance, constipation, swallowed air, medicines, or problems in the bowel that need a proper look. A point on the inner foot will not out-argue any of that. Pressing works best alongside the plain things: wide, supportive shoes with room for the toes, gentle toe stretches, regular meals eaten slowly, and enough water and walking.

It will not replace a diagnosis either. A big toe joint that is suddenly red, hot, swollen and too painful to touch may be gout or an infection and needs to be seen. A sore or wound on the foot that does not close needs a doctor or podiatrist. Bloating that is new after fifty, that does not go away, or that comes with weight loss, blood in the stool, a change in bowel habit or a swelling you can feel, belongs with a doctor, not a pressure point.

Safety First

Do not press over skin that is broken, burned, infected, badly bruised or rashy, and do not press on a red or rubbed bunion, a corn or a callus. Leave the area alone with a recent fracture, unexplained swelling, during a gout flare, or after foot surgery until your surgeon agrees. If you take blood thinners, bruise easily, have a bleeding disorder, have poor circulation in your feet, or have reduced feeling in your feet, use lighter pressure, keep sessions short, check the skin afterwards, and talk to your doctor first.

Stop at once if the pain stays after you lift off, spreads, or if the area becomes swollen, hot or red. Stop too for any burning or numbness in the toes. Nothing here requires you to push through pain. For the full list of cautions and the situations where pressing on yourself is not appropriate, read the full safety guide before you begin.

Questions People Ask

Where is the Taibai (SP3) pressure point? Taibai (SP3) sits on the inner edge of your foot, in the dip right behind the big toe joint. Find the bony bump of that joint, slide back off it toward the heel, and stay on the line where the paler sole skin meets the top skin. In English it is called the Supreme White; in Vietnamese, Thái Bạch.

Can I press Taibai (SP3) if I have a bunion? Press the dip behind the bunion, not the bunion itself, and only if the skin over it is calm. If the bump is red, hot, swollen or rubbed raw by your shoes, leave the area alone and let a doctor or podiatrist look at it.

Is it used for bloating? Yes. In this tradition it is the source point of its channel, which is said to govern digestion, and it is commonly used for a bloated, heavy belly and loose or sluggish bowels. A change in your bowel habit that is new or lasts more than a few weeks needs a doctor first.

How long should I press Taibai? One to three minutes on each foot. Keep the first sessions to about a minute, then add a little as the days go on, up to three. Once or twice a day is enough. Work both feet.

I cannot bend down to my feet. What can I do? Sit on a firm chair and cross the ankle over the other knee, or rest the foot on a second chair. If bending is still hard, use a rounded-tip tool with a long handle, or a smooth stick, and press from where you sit.

Can I press it during a gout attack? No. A big toe joint that is suddenly red, hot, swollen and too sore to touch needs a doctor, and pressing nearby will only add pain. Wait until the flare has fully settled and been checked.

Other Points in This Library

Each of these sits within reach of the same hand. They are often worked in the same sitting.

This page shares general information about a traditional practice. It is not medical advice and does not replace what your doctor has given you. If you are pregnant, managing a health condition, or unsure whether this applies to you, check with your doctor first.

The whole inner edge of the foot, laid out on one page with photographs, is in The Foot Map — the free book. For every point in this library, see the full pressure point index.

(Point shown: SP3 · Taibai · The Supreme White · Thái Bạch.)